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How many different words can be formed with the letters of the word PRACTICE such that each of the word begin with E and ends with R?
A man has 15 friends out of which 7 are his relatives. In how many ways can he invite his 9 friends in which at least 5 must be his relatives?
Which of the following is TRUE for “complementary event or ‘not event’”?
Nine boys have to stand in a circle. In how many ways they are to be stand on the circumference of circle?
In How many ways can a student choose a program of 5 courses, if 9 courses are available and 2 courses are compulsory for every student?
In how many ways can a committee of 3 men and 2 women be formed from 5 men and 6 women?
In how many ways can 4 boys and 3 girls can be seated in a row so that they are in alternate position.
How many words can be formed from the word INCREASE in which both E’s do not come together?
Among a set of 6 black balls and 3 white balls, how many selections of 5 balls can be made such that at least 3 of them are black balls?
A person has 12 friends out of which 7 are relatives. In how many ways can he invite 6 friends such that at least 4 of them are relatives?
